McKinsey's classic consultant is ENTJ: extroverted, broad, hyperrational, and highly organized. Some psychologists believe that independent, peer-reviewed research conducted in the decades since the MBTI was devised has provided something better than Myers-Briggs. They defend the notion of the “big five” personality traits: openness, conscientiousness, extroversion, friendliness, and neuroticism. Of these, only one trait is closely shared with the MBTI's extroversion.
Myers-Briggs does not focus on “neuroticism” or, in fact, on any similar negative trait, which may indicate one of the reasons why the criticisms that modern science has thrown to the test have not yet undermined its popularity. As Adam Grant says: “Going around telling people that they're neurotic and unpleasant won't win you any friends.”However, some personality types have some traits typical of a consultant, but they lack certain aspects that would potentially make them good consultants. It's important to note that yes, extroverts tend to have an easier time as consultants than introverts due to the nature of the work, but that doesn't mean that someone's personality prevents them from doing a good job.
ENTPslove personal freedom and their creativity, confidence, and persistence would be best suited as independent consultants. They are also known for their ability to think outside the box and come up with innovative solutions to complex problems.
In conclusion, it is essential to understand that while ENTJ is the classic consultant personality type for McKinsey, there are other personality types that can be successful in this role. It is important to consider all aspects of a person's personality when determining if they are a good fit for a consulting role.